Crate sz_orm_explain 

sz-orm-explain — Cross-Dialect EXPLAIN Result Parser

Parses EXPLAIN output from MySQL / PostgreSQL / SQLite / Oracle / MSSQL into a unified ExplainPlan, used for:

• Full table scan detection (ScanType::FullTable)
• Missing index detection (index == None and scanned rows exceed threshold)
• Execution plan regression detection ([crate::regression], requires explain-analyzer feature)
• Slow query automatic governance ([crate::slow_query_governance], requires slow-query-governance feature)

Typical usage (with sz-orm-macros’s query! macro db-verify mode):

let plan = sz_orm_explain::parser_for(ExplainDialect::Postgres)?.parse(explain_raw)?;
if plan.scan_type == ScanType::FullTable {
    // Compile-time/CI warning: full table scan
}

Parse failure returns ExplainError::Unparseable, does not panic, can degrade to “no warnings”.

Note: This package intentionally has zero dependency on sz-orm-core, uses its own ExplainDialect enum to describe dialects, avoiding core → macros → explain → core dependency cycle.

Modules

dialect

方言分派辅助

parsers

各方言 EXPLAIN 解析器

Structs

ExplainPlan

Parsed execution plan summary

Enums

ExplainDialect

Supported EXPLAIN parse dialects (corresponding to database engines, format compatible within family)

ExplainError

EXPLAIN parse error

ScanType

Scan type classification (unified abstraction of scan methods across dialects)

Traits

ExplainParser

Dialect EXPLAIN parser trait

Functions

parse_explain

Convenience parse function: parse EXPLAIN output by dialect

parser_for

Dispatch parser by dialect